Abstract: A creator provides to one or more recipients an electronic note for display at the recipient's device(s). If the creator updates information in the notes the note displayed at each the recipient is automatically updated. The electronic note can have an expiration time associated with it that causes the note to expire automatically at the expiration time. The creator can alter the expiration time after the note has been provided to the recipients. The creator and recipients can exchange and update the note based on an agreement between them. Such an agreement can be embodied in an electronic contract that specifies the information in the electronic note the creator can update.